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That's right... we're doing

So here are some tips for using the ID's--

1) Memorize those formulae- esp. sum and difference identities.

2) Simplify to sines and cosines-- using algebra and reciprocal ID's. This is probably the most important step.

3) Use algebra to simplify to the least possible amount of terms.

4) Use a calculator or something to do the rest. (if solving for variable)

Usually, the point of the identities is to

a) prove an identity/theorem or

b) solve for a variable.

Like above, you have to use all of the identities, mostly reciprocals. 

Although it's one of the most annoying parts of math, it's definitely worth knowing.

Another way to solve it is graphing, but that takes away all the coolness of it. Basically, you can find if the graphs of (cot(x)+tan(x)) and (sec(x)csc(x)) are the same.

I might do something with functions and orbits later. Sorry for not posting in a while.

Stay coolio, John